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From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Two cases of broken valve springs on F.2.B. Chassis engines.

Identifier  ExFiles\Box 17\6\  Scan047
Date  28th June 1928
  
X7060
Hs{Lord Ernest Hives - Chair}
Mx{John H Maddocks - Chief Proving Officer}/McM3/T28.6.28.

re F.2.B.Chassis

We have had 2 cases of broken valve springs
on engines of the above series.

1 on Unit test at 2250 r.p.m.
1 discovered during 1 in 10 inspection
i.e. after unit test.

Mx{John H Maddocks - Chief Proving Officer}/McM
  
  


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